Assembling Inorganic Nanocrystal Gels

Inorganic nanocrystal gels retain distinct properties of individual nanocrystals while offering tunable, network-structure-dependent characteristics. We review different mechanisms for assembling gels from colloidal nanocrystals including (1) controlled destabilization, (2) direct bridging, (3) depl...

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Published in:Nano letters 2022-02, Vol.22 (4), p.1457-1466
Main Authors: Green, Allison M., Ofosu, Charles K., Kang, Jiho, Anslyn, Eric V., Truskett, Thomas M., Milliron, Delia J.
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Language:English
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Gels - chemistry
Nanoparticles - chemistry
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container_issue 4
container_start_page 1457
container_title Nano letters
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creator Green, Allison M.
Ofosu, Charles K.
Kang, Jiho
Anslyn, Eric V.
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Milliron, Delia J.
description Inorganic nanocrystal gels retain distinct properties of individual nanocrystals while offering tunable, network-structure-dependent characteristics. We review different mechanisms for assembling gels from colloidal nanocrystals including (1) controlled destabilization, (2) direct bridging, (3) depletion, as well as linking mediated by (4) coordination bonding or (5) dynamic covalent bonding, and we highlight how each impacts gel properties. These approaches use nanocrystal surface chemistry or the addition of small molecules to mediate inter-nanocrystal attractions. Each method offers advantages in terms of gel stability, reversibility, or tunability and presents new opportunities for the design of reconfigurable materials and fueled assemblies.
doi_str_mv 10.1021/acs.nanolett.1c04707
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subjects Gels - chemistry
Nanoparticles - chemistry
title Assembling Inorganic Nanocrystal Gels
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